What about some form of altitude sickness? Trying to understand this.
Not a pilot but was once a health pro'. Ex military and have been on plenty of transport aircraft. How to explain his behavior? What about some form of Monge's disease? Reports are that he seemed normal and had no known history of mental health issues, but some people, have been known to become susceptible to Chronic Mountain Sickness aka Monge's disease. What is the normal cabin altitude of airliners? He may have had a low tolerance combined with repeated exposure to non sea level altitudes. Why is it that he took so many innocents with him? Madness.